// JavaScript Document
// Form Field Validattor
function validateFormOnSubmit(theForm) {
var reason = "";

if (theForm.fields_fname) { reason += validateEmpty(theForm.fields_fname); } 
if (theForm.fields_lname) { reason += validateEmpty(theForm.fields_lname); } 
if (theForm.fields_email) { reason += validateEmail(theForm.fields_email); }
if (theForm.fields_phone) { reason += validatePhone(theForm.fields_phone); }

//if (theForm.fields_address1) { reason += validateEmpty(theForm.fields_address1); } 
//if (theForm.fields_city) { reason += validateEmpty(theForm.fields_city); } 
//if (theForm.fields_state) { reason += validateEmpty(theForm.fields_state); } 
//if (theForm.fields_zip) { reason += validateEmpty(theForm.fields_zip); } 
//  reason += validateEmpty(theForm.from);   
//  reason += validateUsername(theForm.username);
//  reason += validatePassword(theForm.pwd);

      
  if (reason != "") {
    alert("Please enter all the required information:\n\n" + reason);
    return false;
  }

  return true;
}

function validateEmpty(fld) {
    var error = "";
 	var fldname = fld.name;
	
	switch (fldname) {
		case "fields_email":
			fldname = "Email";
		break;
		case "fields_fname":
			fldname = "Your First Name ";
		break;
		case "fields_lname":
			fldname = "Your Last Name ";
		break;
		case "fields_phone":
			fldname = "A number where we can reach you ";
		break;
		case "fields_address1":
			fldname = "In case we decide to mail you a special prize, your address ";
		break;
		case "fields_city":
			fldname = "City ";
		break;
		case "fields_state":
			fldname = "Province ";
		break;
		case "fields_zip":
			fldname = "Your Postal Code ";
		break;
		default : fldname = "";
	}
	
	
	
    if (fld.value.length == 0) {
        fld.style.background = '#FFC9C9'; 
		error = fldname;
        error += "needs to be filled in.\n"
    } else {
        fld.style.background = 'White';
    }
    return error;  
}

function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores
 
    if (fld.value == "") {
        fld.style.background = '#FFC9C9'; 
        error = "You didn't enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        fld.style.background = '#FFC9C9'; 
        error = "The username is the wrong length.\n";
    } else if (illegalChars.test(fld.value)) {
        fld.style.background = '#FFC9C9'; 
        error = "The username contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePassword(fld) {
    var error = "";
    var illegalChars = /[\W_]/; // allow only letters and numbers 
 
    if (fld.value == "") {
        fld.style.background = '#FFC9C9';
        error = "You didn't enter a password.\n";
    } else if ((fld.value.length < 7) || (fld.value.length > 15)) {
        error = "The password is the wrong length. \n";
        fld.style.background = '#FFC9C9';
    } else if (illegalChars.test(fld.value)) {
        error = "The password contains illegal characters.\n";
        fld.style.background = '#FFC9C9';
    } else if (!((fld.value.search(/(a-z)+/)) && (fld.value.search(/(0-9)+/)))) {
        error = "The password must contain at least one numeral.\n";
        fld.style.background = '#FFC9C9';
    } else {
        fld.style.background = 'White';
    }
   return error;
}   

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
   
    if (fld.value == "") {
        fld.style.background = '#FFC9C9';
        error = "You didn't enter an email address.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = '#FFC9C9';
        error = "Please enter a valid email address.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = '#FFC9C9';
        error = "The email address contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');    

   if (fld.value == "") {
        error = "You didn't enter a phone number.\n";
        fld.style.background = '#FFC9C9';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = '#FFC9C9';
    } else if (!(stripped.length == 10)) {
        error = "The phone number is the wrong length. Please help us by including your area code.\n";
        fld.style.background = '#FFC9C9';
    }
    return error;
}